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Southwest 1380

Printed page label not indexed. PDF page 7.

....................................................................................................................................76 Figure 22. Trajectory of the inboard aft latch keeper during the accident sequence. ...................78 iv
Open official document at PDF page 7Left Engine Failure and Subsequent Depressurization: Southwest Airlines Flight 1380, Boeing 737-7H4, N772SW, Philadelphia, Pennsylvania, April 17, 2018

Southwest 1380

Printed page ix. PDF page 12.

airplane. One fan cowl part that was recovered after the accident was the inboard fan cowl aft latch keeper. The left side of the fuselage near the location of the missing cabin window (row 14) had impact damage and witness
Open official document at PDF page 12Left Engine Failure and Subsequent Depressurization: Southwest Airlines Flight 1380, Boeing 737-7H4, N772SW, Philadelphia, Pennsylvania, April 17, 2018

Southwest 1380

Printed page label not indexed. PDF page 14.

strength of the fan cowl, causing its failure. The impact of the inboard fan cowl aft latch keeper with the fuselage near the cabin window adjacent to seat 14A caused the window to depart the airplane, the rapid depressurization
Open official document at PDF page 14Left Engine Failure and Subsequent Depressurization: Southwest Airlines Flight 1380, Boeing 737-7H4, N772SW, Philadelphia, Pennsylvania, April 17, 2018

Southwest 1380

Printed page 23. PDF page 39.

portion of the panel for the outboard fan cowl was not recovered. The forward, center, and aft latch keepers (located on the inboard fan cowl) were recovered along with a small section of the fan cowl structure (on the center
Open official document at PDF page 39Left Engine Failure and Subsequent Depressurization: Southwest Airlines Flight 1380, Boeing 737-7H4, N772SW, Philadelphia, Pennsylvania, April 17, 2018

Southwest 1380

Printed page 32. PDF page 48.

with the size and shape of the recovered inboard fan cowl structure that included the aft latch keeper (as shown in figure 6). The departure of the cabin window resulted in rapid depressurization. 1.3.6.2 Accident Events Compared with Certification Activities
Open official document at PDF page 48Left Engine Failure and Subsequent Depressurization: Southwest Airlines Flight 1380, Boeing 737-7H4, N772SW, Philadelphia, Pennsylvania, April 17, 2018

Southwest 1380

Printed page 38. PDF page 54.

keeper, latch keeper No. 2 is the center latch keeper, and latch keeper No. 3 is the aft latch keeper. 38
Open official document at PDF page 54Left Engine Failure and Subsequent Depressurization: Southwest Airlines Flight 1380, Boeing 737-7H4, N772SW, Philadelphia, Pennsylvania, April 17, 2018